Energy-saving wet desulphurization device

Abstract

The utility model discloses an energy-saving wet desulphurization device which comprises an absorption tower upper layer and an absorption tower lower layer, the absorption tower lower layer is provided with a sewage outlet, the outer side of the sewage outlet is fixedly connected with a limiting frame, the inner side of the limiting frame is slidably connected with an arc-shaped plate, and the bottom end of the absorption tower lower layer is provided with a base; the energy-saving wet desulphurization device comprises a base, an absorption tower lower layer and a sewage scraping assembly, the sewage scraping assembly is arranged in the base and matched with the absorption tower lower layer, and the sewage scraping assembly comprises a sewage collecting disc which is arranged at the top end of the base and located in the absorption tower lower layer. The problems that after calcium sulfate is accumulated at the bottom for a certain time, bottom layer slurry and calcium sulfate need to be pumped out, new limestone slurry is supplemented into a storage cavity for follow-up work, but calcium sulfate accumulated and soaked in the slurry is difficult to extract, and meanwhile a sewage pumping pipeline is prone to being blocked are solved.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection equipment technology, specifically an energy-saving wet desulfurization device. Background Technology

[0002] With the increasing environmental protection requirements for non-power industries, small and medium-sized boilers, industrial kilns, and ships are beginning to install wet desulfurization systems to treat carbon dioxide and dust in exhaust gas. Wet desulfurization is a desulfurization method characterized by the desulfurization system being located at the end of the flue and after the dust collector. The reaction temperature of the desulfurization process is lower than the dew point, so the desulfurized flue gas needs to be reheated before it can be discharged. Because it is a gas-liquid reaction, its desulfurization reaction speed is fast, its efficiency is high, and the utilization rate of desulfurization additives is high. For example, when lime is used as a desulfurizing agent, a desulfurization rate of 90% can be achieved when Ca / S = 1, making it suitable for flue gas desulfurization in large coal-fired power plants.

[0003] Currently, in wet desulfurization, flue gas enters the absorption tower through the intermediate chamber. A slurry circulation pump sprays the slurry from the absorption tower through nozzles in the spray layer, where it comes into contact with the rising flue gas. Carbon dioxide in the flue gas reacts with limestone in the slurry to form calcium sulfite, thus removing the carbon dioxide. The purified flue gas then passes through a demister to remove any remaining droplets before being discharged from the chimney. The calcium sulfite, a byproduct of the reaction, is forcibly oxidized by air supplied by an oxidation fan to form calcium sulfate, which accumulates in the slurry pool at the bottom of the absorption tower, crystallizing into gypsum. After a certain period of accumulation, the bottom slurry, along with the calcium sulfate, needs to be extracted, and new limestone slurry needs to be added to the storage chamber for subsequent processing. However, extracting the calcium sulfate accumulated and soaked in the slurry is difficult and can easily clog the extraction pipes. Therefore, we propose an energy-saving wet desulfurization device. Utility Model Content

[0004] The purpose of this invention is to provide an energy-saving wet desulfurization device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an energy-saving wet desulfurization device, comprising an upper absorption tower and a lower absorption tower, wherein the lower absorption tower has a sludge outlet, a limiting frame is fixedly connected to the outside of the sludge outlet, an arc-shaped plate is slidably connected to the inside of the limiting frame, and a base is provided at the bottom of the lower absorption tower; a sludge scraping assembly is disposed in the base and adapted to the lower absorption tower, comprising a sludge collection tray disposed at the top of the base and located in the lower absorption tower, the center of the sludge collection tray... A rotating shaft is provided at the location, which does not contact the sludge collection tray. A fixed plate is fixedly connected to the sludge collection tray, and a swing plate adapted to the fixed plate is fixedly connected to the rotating shaft. The sludge scraping assembly is used to scrape and accumulate calcium sulfate in the lower layer of the absorption tower onto the sludge collection tray. A lifting assembly is provided in the base and connected to the rotating shaft. It includes a lifting block provided below the sludge collection tray and fixedly connected to the rotating shaft. The lifting assembly is used to lift the sludge collection tray to the sludge outlet.

[0006] Preferably, the scraping assembly includes a mounting bracket disposed in the base and fixedly connected to its bottom end. A motor is mounted on the mounting bracket. A power shaft is fixedly connected to the output end of the motor. A first gear is fixedly connected to the power shaft. A rectangular shaft is slidably connected to the bottom end of the rotating shaft. A second gear that meshes with the first gear is fixedly connected to the bottom end of the rectangular shaft. A trigger mechanism disposed on the mounting bracket is connected to the power shaft.

[0007] Preferably, the triggering mechanism includes a threaded sleeve disposed on the mounting bracket and rotatably connected to its top end, the threaded sleeve being threadedly connected to a threaded rod, and a pulley assembly being drively connected between the threaded sleeve and the rotating shaft, a pressing plate being fixedly connected below the threaded rod, an electric control switch being disposed below the pressing plate and fixedly connected to the mounting bracket, and a connecting bracket being fixedly connected to the electric control switch and slidably connected to the pressing plate.

[0008] Preferably, the lifting assembly includes an electric telescopic rod disposed on the mounting frame, the electric telescopic rod being electrically connected to the electric control switch, and the output end of the electric telescopic rod being fixedly connected to a lifting plate located above the mounting frame, the lifting plate being rotatably connected to the rotating shaft near its bottom end.

[0009] Preferably, the swing plate has a groove, and the sludge collection tray is fixedly connected with a positioning block that matches the groove, which is beneficial for fixing the angle of the swing plate after rotation.

[0010] Preferably, the distance between the swing plate and the outer end of the fixed plate after rotation is less than or equal to the length of the drain outlet, which is beneficial for workers to clean the calcium sulfate on the sludge collection tray.

[0011] Preferably, the outer side of the arc-shaped plate is provided with a non-slip handle to facilitate the operation of workers when opening the arc-shaped plate to clean calcium sulfate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention solves the problem of difficulty in extracting calcium sulfate after it has accumulated at the bottom for a certain period of time, which requires extracting the bottom slurry along with the calcium sulfate and then replenishing the storage chamber with new limestone slurry for subsequent work. This is achieved through the coordinated operation of the scraping component and the lifting component. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the absorption tower of this utility model;

[0015] Figure 2 This is a schematic diagram showing the connection between the lower layer of the absorption tower and the base structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the base of this utility model;

[0017] Figure 4 This is a partial structural diagram of the dirt-scraping component of this utility model;

[0018] Figure 5 This is a schematic diagram of the trigger mechanism structure of this utility model;

[0019] Figure 6 This is a schematic diagram of the lifting component structure of this utility model.

[0020] In the diagram: 1. Upper layer of the absorption tower; 2. Lower layer of the absorption tower; 3. Sewage outlet; 4. Limiting frame; 5. Arc plate; 6. Base; 7. Sludge scraping assembly; 8. Sludge collection tray; 9. Rotating shaft; 10. Fixed plate; 11. Swing plate; 12. Lifting assembly; 13. Lifting block; 14. Mounting frame; 15. Motor; 16. Power shaft; 17. First gear; 18. Rectangular shaft; 19. Second gear; 20. Triggering mechanism; 21. Threaded sleeve; 22. Threaded rod; 23. Pressing plate; 24. Electrical control switch; 25. Connecting frame; 27. Electric telescopic rod; 28. Lifting plate; 29. ​​Groove; 30. Positioning block; 31. Pulley assembly. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0022] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] Please see Figure 1-6 This utility model provides a technical solution: an energy-saving wet desulfurization device, including an upper absorption tower 1 and a lower absorption tower 2. The lower absorption tower 2 has a sludge outlet 3, a limiting frame 4 is fixedly connected to the outside of the sludge outlet 3, and an arc-shaped plate 5 is slidably connected to the inside of the limiting frame 4. A base 6 is provided at the bottom of the lower absorption tower 2; a sludge scraping assembly 7 is provided in the base 6 and adapted to the lower absorption tower 2. The sludge scraping assembly 7 includes a sludge collection plate 8 provided at the top of the base 6 and located in the lower absorption tower 2. A rotating shaft 9 is provided at the center of the sludge collection plate 8. The rotating shaft 9 does not contact the sludge collection plate 8. A fixing plate 10 is fixedly connected to the sludge collection plate 8, and an oscillating mechanism adapted to the fixing plate 10 is fixedly connected to the rotating shaft 9. Plate 11, the swing plate 11 is initially in contact with the fixed plate 10. The scraping component 7 is used to scrape the calcium sulfate in the lower layer 2 of the absorption tower and accumulate it on the sludge collection tray 8. Lifting component 12 is set in the base 6 and connected to the rotating shaft 9. It includes a lifting block 13 set below the sludge collection tray 8 and fixedly connected to the rotating shaft 9. The lifting component 12 is used to lift the sludge collection tray 8 to the sludge outlet 3. The swing plate 11 has a groove 29. The sludge collection tray 8 is fixedly connected to a positioning block 30 that matches the groove 29. After the swing plate 11 rotates, the distance between it and the outer end of the fixed plate 10 is less than or equal to the length of the sludge outlet. In addition, the outer side of the arc plate 5 is provided with an anti-slip handle.

[0024] like Figures 2-4As shown, the scraping assembly 7 includes a mounting bracket 14 disposed in the base 6 and fixedly connected to its bottom end. A motor 15 is mounted on the mounting bracket 14. A power shaft 16 is fixedly connected to the output end of the motor 15. A first gear 17 is fixedly connected to the power shaft 16. A rectangular shaft 18 is slidably connected to the bottom end of the rotating shaft 9. A second gear 19 that meshes with the first gear 17 is fixedly connected to the bottom end of the rectangular shaft 18. A trigger mechanism 20 disposed on the mounting bracket 14 is connected to the power shaft 16. The trigger mechanism 20 includes a threaded sleeve 21 disposed on the mounting bracket 14 and rotatably connected to its top end. A threaded rod 22 is threadedly connected to the threaded sleeve 21. A pulley set 31 is drively connected between the threaded sleeve 21 and the rotating shaft 9. A pressing plate 23 is fixedly connected below the threaded rod 22. An electric control switch 24 fixedly connected to the mounting bracket 14 is disposed below the pressing plate 23. A connecting bracket 25 that slidably connects to the pressing plate 23 is fixedly connected to the electric control switch 24.

[0025] like Figure 3 as well as Figure 6 As shown, the lifting assembly 12 includes an electric telescopic rod 27 mounted on the mounting frame 14. The electric telescopic rod 27 is electrically connected to the electric control switch 24, and the output end of the electric telescopic rod 27 is fixedly connected to a lifting plate 28 located above the mounting frame 14. The lifting plate 28 is rotatably connected to the rotating shaft 9 near the bottom end.

[0026] In a specific implementation, when calcium sulfate accumulates to a certain amount in the lower layer 2 of the absorption tower, it needs to be cleaned. The motor 15 in the control base 6 is operated, and the output end of the motor 15 drives the power shaft 16 to rotate. The power shaft 16 then drives the first gear 17 to rotate. Through the meshing connection between the first gear 17 and the second gear 19, the second gear 19 drives the rectangular shaft 18 to rotate. The rectangular shaft 18 then drives the rotating shaft 9, which is slidably connected, to rotate. The swing plate 11 on the rotating shaft 9 is then driven to rotate on the sludge collection tray 8. The swing plate 11 is initially in contact with the fixed plate 10, and under the drive of the rotating shaft 9, it disengages from the fixed plate 10 and rotates towards the positioning block 30 with the rotating shaft 9 as the center until the swing plate 11 contacts the positioning block 30. At this time, the positioning block 30 is located in the slot 29.

[0027] While the rotating shaft 9 rotates, it drives the threaded sleeve 21 to rotate on the mounting bracket 14 via the transmission connection of the pulley group 31. The threaded sleeve 21 is threadedly connected to the threaded rod 22. During this rotation, the threaded sleeve 21 drives the threaded rod 22 downwards, and the pressing plate 23 below the threaded rod 22 slides downwards on the connecting bracket 25. When the positioning block 30 is embedded in the slot 29, the pressing plate 23 simultaneously contacts and presses the electric control switch 24. Since the electric control switch 24 is electrically connected to the electric telescopic rod 27, the electric control switch 24 controls the electric telescopic rod 27 to operate. Machine 15 stops operating, while the output end of the electric telescopic rod 27 extends upward, driving the top lifting plate 28 to move upward. The lifting plate 28 simultaneously drives the rotating shaft 9 to move upward. The lifting block 13 on the rotating shaft 9 then lifts the upper sludge collection plate 8 upward, causing the sludge collection plate 8 to carry calcium sulfate from the bottom slurry upward until the sludge collection plate 8 moves to the sludge outlet 3, level with the bottom of the sludge outlet 3. Then, the worker lifts the arc plate 5 upward, and the arc plate 5 slides upward in the limiting frame 4, exposing the calcium sulfate on the sludge collection plate 8 to the sludge outlet 3. The worker can then clean out the calcium sulfate from the sludge outlet 3.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving wet desulfurization device, characterized in that, include: The upper layer (1) and lower layer (2) of the absorption tower are provided. The lower layer (2) of the absorption tower is provided with a sewage outlet (3). A limiting frame (4) is fixedly connected to the outside of the sewage outlet (3). An arc plate (5) is slidably connected to the inside of the limiting frame (4). A base (6) is provided at the bottom of the lower layer (2). The scraping assembly (7) is disposed in the base (6) and adapted to the lower layer (2) of the absorption tower. It includes a sludge collection tray (8) disposed at the top of the base (6) and located in the lower layer (2) of the absorption tower. A rotating shaft (9) is disposed at the center of the sludge collection tray (8). The rotating shaft (9) does not contact the sludge collection tray (8). A fixing plate (10) is fixedly connected to the sludge collection tray (8). A swing plate (11) adapted to the fixing plate (10) is fixedly connected to the rotating shaft (9). The scraping assembly (7) is used to scrape the calcium sulfate in the lower layer (2) of the absorption tower and accumulate it on the sludge collection tray (8). Lifting assembly (12) is disposed in the base (6) and connected to the rotating shaft (9). It includes a lifting block (13) disposed below the sludge collection tray (8) and fixedly connected to the rotating shaft (9). The lifting assembly (12) is used to lift the sludge collection tray (8) to the sludge outlet (3).

2. The energy-saving wet desulfurization device according to claim 1, characterized in that, The scraping assembly (7) includes a mounting bracket (14) disposed in the base (6) and fixedly connected to its bottom end. A motor (15) is mounted on the mounting bracket (14). A power shaft (16) is fixedly connected to the output end of the motor (15). A first gear (17) is fixedly connected to the power shaft (16). A rectangular shaft (18) is slidably connected to the bottom end of the rotating shaft (9). A second gear (19) that meshes with the first gear (17) is fixedly connected to the bottom end of the rectangular shaft (18). A trigger mechanism (20) disposed on the mounting bracket (14) is connected to the power shaft (16).

3. The energy-saving wet desulfurization device according to claim 2, characterized in that, The triggering mechanism (20) includes a threaded sleeve (21) disposed on the mounting bracket (14) and rotatably connected to its top end. The threaded sleeve (21) is threadedly connected to a threaded rod (22), and a pulley group (31) is driven between the threaded sleeve (21) and the rotating shaft (9). A pressing plate (23) is fixedly connected below the threaded rod (22). An electric control switch (24) fixedly connected to the mounting bracket (14) is disposed below the pressing plate (23). A connecting bracket (25) slidably connected to the pressing plate (23) is fixedly connected to the electric control switch (24).

4. The energy-saving wet desulfurization device according to claim 3, characterized in that, The lifting assembly (12) includes an electric telescopic rod (27) disposed on the mounting frame (14). The electric telescopic rod (27) is electrically connected to the electric control switch (24), and the output end of the electric telescopic rod (27) is fixedly connected to a lifting plate (28) located above the mounting frame (14). The lifting plate (28) is rotatably connected to the rotating shaft (9) near the bottom end.

5. The energy-saving wet desulfurization device according to claim 1, characterized in that, The swing plate (11) has a groove (29) at the beginning, and the sludge collection tray (8) is fixedly connected with a positioning block (30) that matches the groove (29).

6. The energy-saving wet desulfurization device according to claim 1, characterized in that, After the swing plate (11) rotates, the distance between it and the outer end of the fixed plate (10) is less than or equal to the length of the drain outlet.

7. The energy-saving wet desulfurization device according to claim 1, characterized in that, The outer side of the arc-shaped plate (5) is provided with an anti-slip handle.

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